Archive of the former Yahoo!Groups mailing list: MOTM

This subject came up a few days ago, so I pulled out one of my 800s and
schematic to take a look. All my 800s are the older version (like me). I
will take some photos and put the update data up at my website soon. But,
essentially, two components are added. One small signal diode like the
1N4148 and one 1K resistor.

The 1K resistor is connected from the junction point of R1 and R3 to the
trigger jack switch. (top connection on jack) I used the end of R3 closest
to U3 as it was closer than the end of R1.

The diode is piggy backed across R6 with the cathode end toward U2. I did
both these updates with out disassembling the module attaching to the top of
the PCB.

These are not modifications, but rather updates to the circuit between Rev A
and rev B of the MOTM-800. The primary benefit is to be able to have full
ADSR function with a gate only.

Larry H